Rochester has a humid continental climate. It has very warm summers, and very cold winters. Rochester gets about thirty inches of rain per year, and about 48 inches of snow. There is a lot of snowfall in the winter months. Spring and fall are transitional seasons, with a general warming trend during the spring and a general cooling trend during the fall. On average, there are 180 sunny days per year in Rochester, Minnesota. The July high is around 81 degrees. The January low is 4. The number of days with any measurable precipitation is 116.
Rochester has also been hit by two F4 tornadoes since 1950. On August 21, 1883, the Great Tornado demolished much of Rochester, leaving 37 dead and about 200 injured.
| Rochester Precipitation |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Precipitation (inches) |
2.1 |
2.1 |
2.3 |
2.6 |
2.7 |
3.0 |
2.7 |
3.4 |
3.0 |
2.4 |
2.9 |
2.7 |
32.0 |
| Days with Precipitation 0.01 inch or More |
18.0 |
16.0 |
15.0 |
13.0 |
12.0 |
11.0 |
10.0 |
10.0 |
11.0 |
12.0 |
15.0 |
18.0 |
160 |
| Monthly Snowfall (inches) |
23.0 |
22.1 |
14.9 |
3.6 |
0.3 |
< 0.05 |
< 0.05 |
< 0.05 |
0.0 |
0.2 |
7.4 |
19.2 |
90.7 |
| Other Rochester Weather Indicators |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Annual |
| Average Wind Speed |
11.6 |
11.1 |
11.0 |
10.7 |
9.3 |
8.6 |
8.0 |
7.7 |
8.1 |
8.8 |
10.2 |
10.7 |
9.6 |
| Clear Days |
2.0 |
2.0 |
5.0 |
6.0 |
6.0 |
7.0 |
8.0 |
8.0 |
7.0 |
6.0 |
2.0 |
2.0 |
61.0 |
| Partly Cloudy Days |
7.0 |
7.0 |
8.0 |
8.0 |
10.0 |
11.0 |
12.0 |
12.0 |
10.0 |
8.0 |
6.0 |
6.0 |
104 |
| Cloudy Days |
22.0 |
19.0 |
18.0 |
16.0 |
15.0 |
12.0 |
11.0 |
12.0 |
13.0 |
16.0 |
22.0 |
23.0 |
200 |
| Percent of Possible Sunshine |
35.0 |
41.0 |
49.0 |
53.0 |
59.0 |
66.0 |
69.0 |
66.0 |
59.0 |
49.0 |
31.0 |
30.0 |
51.0 |
| Avg. Relative Humidity |
56.5 |
74.0 |
73.0 |
69.5 |
66.0 |
67.0 |
69.5 |
71.0 |
73.0 |
73.0 |
|||
| Rochester Temperature |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg. Temperature |
23.6 |
24.6 |
34.3 |
45.9 |
57.1 |
65.1 |
70.2 |
68.0 |
61.7 |
51.1 |
40.5 |
29.1 |
47.6 |
| Avg. Max Temperature |
30.9 |
32.5 |
42.7 |
55.9 |
67.8 |
75.8 |
80.7 |
78.1 |
71.8 |
60.5 |
47.8 |
35.8 |
56.7 |
| Avg. Min Temperature |
16.3 |
16.6 |
25.7 |
35.9 |
46.3 |
54.3 |
59.6 |
57.8 |
51.7 |
41.6 |
33.3 |
22.4 |
38.5 |
| Days with Max Temp of 90 F or Higher |
0.0 |
0.0 |
0.0 |
< 0.5 |
< 0.5 |
2.0 |
4.0 |
2.0 |
0.0 |
0.0 |
0.0 |
0.0 |
8.0 |
| Days with Min Temp Below Freezing |
28.0 |
26.0 |